diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 22523599..1678761e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,7 +42,7 @@ jobs:
   integration-tests-aspect:
     strategy:
       matrix:
-        os: [ ubuntu-22.04, macos-12 ]
+        os: [ ubuntu-22.04, macos-12, windows-2022 ]
     runs-on: ${{ matrix.os }}
     needs: [ fast-tests ]
     steps:
diff --git a/test/aspect/alias/test_invalid_dependency_through_alias.py b/test/aspect/alias/test_invalid_dependency_through_alias.py
index c53ac412..d523ea78 100644
--- a/test/aspect/alias/test_invalid_dependency_through_alias.py
+++ b/test/aspect/alias/test_invalid_dependency_through_alias.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -6,7 +8,7 @@ class TestCase(TestCaseBase):
     def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
-            invalid_includes=["File='alias/use_a_and_b.cpp', include='alias/a.h'"],
+            invalid_includes=[f"File='{Path('alias/use_a_and_b.cpp')}', include='alias/a.h'"],
         )
         actual = self._run_dwyu(target="//alias:use_a_transitively", aspect=self.default_aspect)
 
diff --git a/test/aspect/defines/defines_from_bazel_target.h b/test/aspect/defines/defines_from_bazel_target.h
index a15f1d96..7f6c0c72 100644
--- a/test/aspect/defines/defines_from_bazel_target.h
+++ b/test/aspect/defines/defines_from_bazel_target.h
@@ -1,17 +1,17 @@
 #ifdef SOME_DEFINE
 #include "defines/support/a.h"
 #else
-#include "defines/support/b.h"
+#include "non/existing/a.h"
 #endif
 
 #ifdef LOCAL_DEFINE
 #include "defines/support/a.h"
 #else
-#include "defines/support/b.h"
+#include "non/existing/b.h"
 #endif
 
 #if SOME_COPT > 40
 #include "defines/support/a.h"
 #else
-#include "defines/support/b.h"
+#include "non/existing/c.h"
 #endif
diff --git a/test/aspect/defines/transitive_defines_from_bazel_target.h b/test/aspect/defines/transitive_defines_from_bazel_target.h
index e99dbf4f..3d175881 100644
--- a/test/aspect/defines/transitive_defines_from_bazel_target.h
+++ b/test/aspect/defines/transitive_defines_from_bazel_target.h
@@ -3,7 +3,7 @@
 #ifdef TRANSITIVE_DEFINE
 #include "defines/support/a.h"
 #else
-#include "defines/support/b.h"
+#include "non/existing/a.h"
 #endif
 
 #include "defines/support/a.h"
@@ -13,9 +13,9 @@
 // 'local_defines' which should not leak to users of the target
 
 #ifdef LOCAL_DEFINE
-#include "defines/support/b.h"
+#include "non/existing/b.h"
 #endif
 
 #ifdef LOCAL_COPT
-#include "defines/support/b.h"
+#include "non/existing/c.h"
 #endif
diff --git a/test/aspect/execution_logic.py b/test/aspect/execution_logic.py
index 851129c1..03517e5a 100644
--- a/test/aspect/execution_logic.py
+++ b/test/aspect/execution_logic.py
@@ -3,7 +3,6 @@
 import logging
 import subprocess
 from importlib.machinery import SourceFileLoader
-from os import environ
 from pathlib import Path
 from typing import TYPE_CHECKING
 
@@ -75,7 +74,7 @@ def main(
     versions = [TestedVersions(bazel=bazel, python=python)] if bazel and python else tested_versions
 
     failed_tests = []
-    output_root = Path(environ["HOME"]) / ".cache" / "bazel" / workspace_path.relative_to("/")
+    output_root = Path.home() / ".cache" / "bazel" / "dwyu"
     for version in versions:
         output_base = output_root / f"aspect_integration_tests_bazel_{version.bazel}_python_{version.python}"
         output_base.mkdir(parents=True, exist_ok=True)
diff --git a/test/aspect/ignore_includes/test_include_not_covered_by_patterns.py b/test/aspect/ignore_includes/test_include_not_covered_by_patterns.py
index 36d1e6b2..bbc41721 100644
--- a/test/aspect/ignore_includes/test_include_not_covered_by_patterns.py
+++ b/test/aspect/ignore_includes/test_include_not_covered_by_patterns.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -7,7 +9,7 @@ def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
             invalid_includes=[
-                "File='ignore_includes/use_not_ignored_header.h', include='example_substring_matching_does_not_work_here.h'"
+                f"File='{Path('ignore_includes/use_not_ignored_header.h')}', include='example_substring_matching_does_not_work_here.h'"
             ],
         )
         actual = self._run_dwyu(
diff --git a/test/aspect/target_mapping/test_use_c_with_direct_deps_mapping.py b/test/aspect/target_mapping/test_use_c_with_direct_deps_mapping.py
index 3f41790c..62457cba 100644
--- a/test/aspect/target_mapping/test_use_c_with_direct_deps_mapping.py
+++ b/test/aspect/target_mapping/test_use_c_with_direct_deps_mapping.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -6,7 +8,7 @@ class TestCase(TestCaseBase):
     def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
-            invalid_includes=["File='target_mapping/use_lib_c.cpp', include='target_mapping/libs/c.h'"],
+            invalid_includes=[f"File='{Path('target_mapping/use_lib_c.cpp')}', include='target_mapping/libs/c.h'"],
             unused_public_deps=["//target_mapping/libs:a"],
         )
         actual = self._run_dwyu(
diff --git a/test/aspect/target_mapping/test_use_c_with_specific_mapping.py b/test/aspect/target_mapping/test_use_c_with_specific_mapping.py
index 97eab6ef..e845a1f2 100644
--- a/test/aspect/target_mapping/test_use_c_with_specific_mapping.py
+++ b/test/aspect/target_mapping/test_use_c_with_specific_mapping.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -6,7 +8,7 @@ class TestCase(TestCaseBase):
     def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
-            invalid_includes=["File='target_mapping/use_lib_c.cpp', include='target_mapping/libs/c.h'"],
+            invalid_includes=[f"File='{Path('target_mapping/use_lib_c.cpp')}', include='target_mapping/libs/c.h'"],
             unused_public_deps=["//target_mapping/libs:a"],
         )
         actual = self._run_dwyu(
diff --git a/test/aspect/tree_artifact/test_invalid_tree_artifact.py b/test/aspect/tree_artifact/test_invalid_tree_artifact.py
index d9c26f41..aeee919c 100644
--- a/test/aspect/tree_artifact/test_invalid_tree_artifact.py
+++ b/test/aspect/tree_artifact/test_invalid_tree_artifact.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -7,7 +9,9 @@ def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
             # We omit "File='bazel-out/<compilation_mode_and_platform> to allow testing in various environments
-            invalid_includes=["/bin/tree_artifact/sources.cc/tree_lib.cc', include='tree_artifact/some_lib.h'"],
+            invalid_includes=[
+                f"{Path('/bin/tree_artifact/sources.cc/tree_lib.cc')}', include='tree_artifact/some_lib.h'"
+            ],
         )
         actual = self._run_dwyu(
             target="//tree_artifact:tree_artifact_library",
diff --git a/test/aspect/using_transitive_dep/test_detect_using_transitive_dep.py b/test/aspect/using_transitive_dep/test_detect_using_transitive_dep.py
index ca181248..8f22da95 100644
--- a/test/aspect/using_transitive_dep/test_detect_using_transitive_dep.py
+++ b/test/aspect/using_transitive_dep/test_detect_using_transitive_dep.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -6,7 +8,7 @@ class TestCase(TestCaseBase):
     def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
-            invalid_includes=["File='using_transitive_dep/main.cpp', include='using_transitive_dep/foo.h'"],
+            invalid_includes=[f"File='{Path('using_transitive_dep/main.cpp')}', include='using_transitive_dep/foo.h'"],
         )
         actual = self._run_dwyu(target="//using_transitive_dep:main", aspect=self.default_aspect)
 
diff --git a/test/aspect/using_transitive_dep/test_detect_using_transitive_impl_dep.py b/test/aspect/using_transitive_dep/test_detect_using_transitive_impl_dep.py
index 3e723498..fb9c00bd 100644
--- a/test/aspect/using_transitive_dep/test_detect_using_transitive_impl_dep.py
+++ b/test/aspect/using_transitive_dep/test_detect_using_transitive_impl_dep.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from result import ExpectedResult, Result
 from test_case import TestCaseBase
 
@@ -7,7 +9,7 @@ def execute_test_logic(self) -> Result:
         expected = ExpectedResult(
             success=False,
             invalid_includes=[
-                "File='using_transitive_dep/transitive_usage_through_impl_deps.h', include='using_transitive_dep/foo.h'"
+                f"File='{Path('using_transitive_dep/transitive_usage_through_impl_deps.h')}', include='using_transitive_dep/foo.h'"
             ],
         )
         actual = self._run_dwyu(